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A man crosses a river in a boat. If he crosses the river in minimum time he takes 10 min with a drift of 120 m. If he crosses the river taking the shortest path, he takes 12.5 min, find
(a) width of the river
(b) velocity of the boat with respect to river
(c) Speed of the current
Updated Thu, 30 Aug 2018 04:03 pm
Which of the following statement is not correct with respect to malaria?